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PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 7) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2013
Actual pension asset returns |  |  |
Extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions, low end of range | 10 years |  |
Extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions, high end of range | 20 years |  |
Average annual return of company's U.S. pension fund over past 10 years (as a percent) | 8.00% |  |
Average annual return of company's U.S. pension fund over past 20 years (as a percent) | 9.00% |  |
Defined contribution plans related to employee investment and savings primarily in the U.S. |  |  |
Defined contribution plans employer contributions and costs (primarily in the U.S.) | $ 185 | $ 184 | $ 178
Pensions |  |  |
Actual pension asset returns |  |  |
Market related value period | 5 years |  |
Pensions | Real Estate |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 5.00% |  |
Pensions | Equity Securities |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 49.00% |  |
Pensions | Debt Securities |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 24.00% |  |
Pensions | Other Investments |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 22.00% |  |
Health Care and Life Insurance | Real Estate |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 4.00% |  |
Health Care and Life Insurance | Equity Securities |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 53.00% |  |
Health Care and Life Insurance | Debt Securities |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 28.00% |  |
Health Care and Life Insurance | Other Investments |  |  |
Target asset allocations, pension and health care plan assets |  |  |
Target allocation percentage | 15.00% |  |

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- Definition Represents the average annual return of the entity's United States pension fund over past ten years. + References No definition available. + Details
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- Definition Represents the average annual return of the entity's United States pension fund over past twenty years. + References No definition available. + Details
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- Definition The period over which changes in the fair value of pension plan assets are systematically recognized. + References No definition available. + Details
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- Definition This element represents the high end of the range for the extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions. + References No definition available. + Details
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- Definition This element represents the low end of the range for the extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions. + References No definition available. + Details
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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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